<!DOCTYPE html>
<html>

<head>
    <meta charset="utf-8">
    <title>This should be in an iframe</title>
    <style>
        html,
        body {
            margin: 0;
            padding: 0;
            height: 100%;
        }

        body {
            background-color: bisque;
        }
    </style>
</head>

<body>
<div>content</div>
</body>

</html>
